In San Francisco, primatologist Peter Elliot works with Amy, a gorilla with an extraordinary vocabulary of 620 "signs," the most ever learned by a primate, and she likes to finger paint. But recently her behavior has been erratic and her drawings match, with stunning accuracy, the brittle pages of a Portuguese print dating back to 1642 . . . a drawing of an ancient lost city. A new expedition—along with Amy—is sent into the Congo, where they enter a secret world, and the only way out may be through a horrifying death . . .

About the Author

Michael Crichton has sold over 200 million books, which have been translated into thirty-six languages; thirteen of his books have been made into films. His novels include Next, State of Fear, Timeline, Jurassic Park, and The Andromeda Strain. Also known as a filmmaker and the creator of ER, he remains the only writer to have had the number-one book, movie, and TV show simultaneously. At the time of Crichton's death in 2008, he was well into the writing of Micro; Richard Preston was selected to complete the novel.

Richard Preston is an internationally acclaimed best-selling author of eight books, including The Hot Zone and The Wild Trees. Many of Preston's books have first appeared in The New Yorker. He has won numerous awards, including the American Institute of Physics Award and the National Magazine Award, and he is the only person not a medical doctor to receive the Centers for Disease Control's Champion of Prevention Award for public health. He lives with his wife and three children near Princeton, New Jersey.